public async Task MigratePublishers()
{
IEnumerable <PublisherEntity> retval = new List <PublisherEntity>();
using (var dataContext = new AppDbContext())
{
retval = dataContext.Publishers.ToList();
}
using (var dataContext = new NewAppDbContext())
{
var newList = dataContext.Publishers.FirstOrDefault();
if (newList == null)
{
using (var transaction = dataContext.Database.BeginTransaction())
{
try
{
dataContext.Database.ExecuteSqlCommand("SET IDENTITY_INSERT [dbo].[Publishers] ON");
dataContext.Publishers.AddRange(retval);
dataContext.SaveChanges();
dataContext.Database.ExecuteSqlCommand("SET IDENTITY_INSERT [dbo].[Publishers] OFF");
transaction.Commit();
}
catch (Exception e)
{
var test = e.Message;
}
}
}
}
}
public async Task UpdatePurchaseItems()
{
IEnumerable <PurchaseItemEntity> oldPIs = new List <PurchaseItemEntity>();
using (var dataContext = new AppDbContext())
{
oldPIs = dataContext.PurchaseItems.ToList();
}
using (var dataContext = new NewAppDbContext())
{
var newList = dataContext.PurchaseItems.ToList();
if (newList != null)
{
using (var transaction = dataContext.Database.BeginTransaction())
{
try
{
foreach (var oldPi in oldPIs)
{
var newEntity = newList.Where(x => x.Id == oldPi.Id).FirstOrDefault();
if (newEntity != null)
{
newEntity.IssueNumber = oldPi.IssueNumber;
newEntity.IssueNumberOrdinal = oldPi.IssueNumberOrdinal;
newEntity.IssueId = oldPi.IssueId;
newEntity.TitleId = oldPi.TitleId;
}
dataContext.SaveChanges();
}
transaction.Commit();
}
catch (Exception e)
{
var test = e.Message;
}
}
}
}
}
